Simulations in a Dynamic Basis

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• Matthew Ord, Cavendish Laboratory, University of Cambridge
• Tuesday 28 October 2025, 15:30-16:30
• Seminar Room - North, Ray Dolby Centre, Cavendish Laboratory.

If you have a question about this talk, please contact Boyao Liu.

Simulating quantum systems is computationally expensive largely because of the amount of “state” that must be propagated. Classical diffusion can be described efficiently by just two variables, x and p, whereas quantum state diffusion requires tracking a wavefunction with hundreds of complex degrees of freedom. This becomes especially challenging when studying long-timescale behavior, where the wavefunction must be large enough to represent the system across its entire configuration space.

In this talk, I will present a new approach to simulating quantum diffusion which makes use of a dynamic basis to greatly reduce the amount of state we must propagate. I show that with this approach we need only a single complex variable to describe the state of an open harmonic system.

This talk is part of the Surface Physics Seminar series.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• School of Physical Sciences
• Seminar Room - North, Ray Dolby Centre, Cavendish Laboratory
• Surface Physics Seminar
• Thin Film Magnetic Talks

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